Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 55 insertions, 0 deletions

diff --git a/hw/net/i82596.h b/hw/net/i82596.h
new file mode 100644
index 000000000..f0bbe810e
--- /dev/null
+++ b/hw/net/i82596.h
@@ -0,0 +1,55 @@
+#ifndef HW_I82596_H
+#define HW_I82596_H
+
+#define I82596_IOPORT_SIZE       0x20
+
+#include "exec/memory.h"
+#include "exec/address-spaces.h"
+
+#define PORT_RESET              0x00    /* reset 82596 */
+#define PORT_SELFTEST           0x01    /* selftest */
+#define PORT_ALTSCP             0x02    /* alternate SCB address */
+#define PORT_ALTDUMP            0x03    /* Alternate DUMP address */
+#define PORT_CA                 0x10    /* QEMU-internal CA signal */
+
+typedef struct I82596State_st I82596State;
+
+struct I82596State_st {
+    MemoryRegion mmio;
+    MemoryRegion *as;
+    qemu_irq irq;
+    NICState *nic;
+    NICConf conf;
+    QEMUTimer *flush_queue_timer;
+
+    hwaddr scp;         /* pointer to SCP */
+    uint8_t sysbus;
+    uint32_t scb;       /* SCB */
+    uint16_t scb_status;
+    uint8_t cu_status, rx_status;
+    uint16_t lnkst;
+
+    uint32_t cmd_p;     /* addr of current command */
+    int ca;
+    int ca_active;
+    int send_irq;
+
+    /* Hash register (multicast mask array, multiple individual addresses). */
+    uint8_t mult[8];
+    uint8_t config[14]; /* config bytes from CONFIGURE command */
+
+    uint8_t tx_buffer[0x4000];
+};
+
+void i82596_h_reset(void *opaque);
+void i82596_ioport_writew(void *opaque, uint32_t addr, uint32_t val);
+uint32_t i82596_ioport_readw(void *opaque, uint32_t addr);
+void i82596_ioport_writel(void *opaque, uint32_t addr, uint32_t val);
+uint32_t i82596_ioport_readl(void *opaque, uint32_t addr);
+uint32_t i82596_bcr_readw(I82596State *s, uint32_t rap);
+ssize_t i82596_receive(NetClientState *nc, const uint8_t *buf, size_t size_);
+bool i82596_can_receive(NetClientState *nc);
+void i82596_set_link_status(NetClientState *nc);
+void i82596_common_init(DeviceState *dev, I82596State *s, NetClientInfo *info);
+extern const VMStateDescription vmstate_i82596;
+#endif